Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7604793 | Iron oxide precipitation from acidic iron salt solutions | Darren Koningen, David Dreisinger | 2009-10-20 |
| 7399454 | Metallurgical dust reclamation process | Darren Koningen | 2008-07-15 |